紫外/臭氧复合压载水处理系统的建立与运行  

Establishment and performance of the O_3/UV pilot-scale ballast water treatment

作　　者：徐仲[1,2] 陈国桢 苏婷 张思源 尤宏 

机构地区：[1]城市水资源与水环境国家重点实验室(哈尔滨工业大学),哈尔滨150090 [2]哈尔滨工业大学(威海)海洋科学与技术学院,山东威海264209

出　　处：《哈尔滨工业大学学报》2018年第2期100-103,共4页Journal of Harbin Institute of Technology

摘　　要：为探究可以实现压载水达标排放的处理手段,建立了可以控制实现O_3、UV单独处理的O_3/UV复合压载水处理中试系统.以大肠杆菌和杜氏盐藻为目标微生物,MPN法计数剩余活菌数,CFDA-AM荧光染色法计数剩余活藻数,对该中试系统灭活微生物性能进行研究;N,N-二乙基对苯二胺(DPD)分光光度法测定该系统产生的总剩余氧化物(total residual oxidants,TRO)的衰减.结果表明,O_3和UV具有协同作用,二者复合要优于单独处理的灭活效果.辐照度67μW/cm^2、O_3投加量1.62 g/h、处理1.0 s、出水2 h后即检测不到大肠杆菌和杜氏盐藻的存在,能够满足国际海事组织关于微生物灭活标准.TRO浓度会随着时间的延长而衰减,且实验并未检测到菌和藻的复活,说明该系统具有理想的持续灭活性能.O_3/UV复合压载水处理系统弥补了单一处理手段效率低的缺点,二者复合有利于降低能耗,可望成为新一代处理手段.To explore the treatment method that enables the quality of ballast water to meet the discharge standard,the O_3/UV combined ballast water treatment system was established,in which O_3 and UV can be controlled independently. Escherichia coli and Dunaliellasalina are target microorganisms. To study the system performance in inactivating microorganisms,MPN and CFDA-AM fluorescence staining were used to count residual viable bacteria and residual viable algae respectively. N,N-Diethyl-p-phenylenediamine（ DPD） spectrophotometry was used to measure the attenuation of total residual oxide（ TRO） generated in the system. The results show that O_3 and UV have a synergistic effect,and the combination of the two has better performance of inactivation than that of the individual treatment. Under the condition of 67 μW/cm^2 UV irradiance,1.62 g/h of the O_3 dosage for 1 s exposure,the Escherichia coli and Dunaliellasalinacan cannot be detected after 2 h,which means the effluent can meet IMO microbial inactivation standards. TRO concentration decayed with time,and the experiment did not detect the resurrection of bacteria and algae,which indicate a good continuous inactivation performance of the system.Compared with individual treatment,the combined system increases the treatment efficiency and reduces the energy consumption,which makes itself a promising method.

关 键 词：压载水 臭氧 紫外 大肠杆菌 杜氏盐藻 

分 类 号：P76[天文地球—海洋科学]